Enable basic travis-ci build tests

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>

.travis.yml

+language: c
+
+compiler:
+  - clang
+  - gcc
+
+addons:
+  apt:
+    packages:
+      - build-essential
+      - xorg-dev
+      - xutils-dev
+      - x11proto-dri2-dev
+      - libltdl-dev
+      - libtool
+      - automake
+      - libdrm-dev
+
+script: autoreconf -vi && ./configure && make